Initially a Mixture of Two Radioactive Sources Contains the Same

question 31

Multiple Choice

Initially a mixture of two radioactive sources contains the same number of nuclei of source A and source B.The half-life of A is 2 hours,and the half-life of B is 3 hours.What will be the ratio of remaining nuclei of A divided by remaining nuclei B after 12 hours? (Assume A does not decay into B or vice-versa.)

• A)0.250
• B)0.125
• C)0.5
• D)0.0625
• E)None of these is correct.

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Definitions:

Fixed Dividends

Regular, predetermined dividend payments made by a corporation to its preferred stockholders.

Underwriting

The process by which an individual or institution takes on financial risk for a fee, such as in the issuance of insurance policies or financial securities.

Insurance Companies

Financial institutions that provide coverage, compensating financial losses during accidents, property damage, or other liabilities.

Discount Rate

The interest rate charged by central banks on loans to commercial banks or financial institutions, influencing monetary policy and economic activity.